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Role of Apparent Diffusion Coefficient in Evaluation of Rectal Cancer Aggressiveness
Faculty
Medicine
Year:
2020
Type of Publication:
ZU Hosted
Pages:
Authors:
Ahmed Fekry Farag Salim
Staff Zu Site
Abstract In Staff Site
Journal:
Zagazig University Medical Journal Zagazig University Medical Journal
Volume:
Keywords :
Role , Apparent Diffusion Coefficient , Evaluation , Rectal
Abstract:
Background: This study aims to evaluate the importance of diffusionweighted MRI imaging (DWI) as a truthful marker for detection of rectal cancer tumor aggressiveness, by studying the relation between apparent diffusion coefficient (ADC) values of the tumors, MRI findings and pathological factors for prognosis. Methods: Between October 2017 and May 2019, the study included 80 patients have been proved to have carcinoma of the rectum by colonoscopic biopsy and histopathological assessment. All patients were assessed prior to surgery and neo-adjuvant therapy with standard MRI and diffusion weight images. Results: The mean ADC values are lower with poor prognostic factors for tumors with high CEA levels more than 5 ng/ml (P = 0.004), positive nodal disease (P = 0.0001), positive LVI invasion (P = 0.0001), with increasing T stage (P = 0.0001) and significantly lower among poorly differentiated tumors (P = 0.0341). There is also a significant positive correlation (r = 0.487; P = 0.0001) between ADC values and the distance from the tumor to the MRF. Conclusion: Our study suggests that quantitative measurement of ADC values can be used in preoperative assessment of degree of rectal cancer progression. ADC is capable of becoming a realistic imaging biomarker of tumor profile aggressiveness. Keywords: Rectal carcinoma; magnetic resonance imaging; diffusion weighted imaging; ADC value.
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